The materials that are inspected are usually conductor materials (like silver or silver palladium), resistor paste, cover glass, adhesives, printed or electroplated gold, etc., and our technology detects all defects that are relevant in modern fine line screen printing. With our specially designed flipping module the back side can be inspected. The tendency goes to even finer structures. On prints with less than 50 µm line widths, inspection with the human eye is not possible or very unreliable. The STRATUS VISION AOI systems can inspect a 10” x 10” substrate in less than 10 seconds and find defects between 0.2µm and 30µm (depends on pixel size). Wet (directly after screen printing) or dry surfaces can be inspected.